<template>
  <div>
    <ul>
      <li v-for="(item,index) in arr"  :key=index>{{item}}
        <button @click='del(index)'>删除</button>
      </li>
    </ul>
    <button @click='add'>生成按钮</button>
  </div>
</template>

<script>
export default {
  data(){
    return{
      arr:[]
    }
  },
methods:{
  add(){
    this.arr.push(Math.floor(Math.random()*10))
  },
  del(index){
    this.arr.splice(index,1)
  }
}
}
</script>

<style>

</style>